Improvement in steps for upright shafts



IUNITED STATES PATENT FEIGE.

ABRAHAM G. HAMAKER, OF EBERLYS MILLS, PENNSYLVANIA.

IMPROVEMENT IN STEPS FOR UPRIGHT SHAFTS.

Specification forming part of Letters Patent N0. 59,594, dated November13, 1866.

To all whom it may concern:

Be it known that I, ABRAHAM G. HMIAKER, of Eberlys Mills, Cumberlandcounty, and State of Pennsylvania, have invented an lmproved Step forSpindles or Upright Shafts; and l do hereby declare the following to bean exact description thereof, reference' bein g had to the accompanying`drawings, and to the letters of reference marked thereon, making a partof this specieation, in Whieh Figure l represents a side elevation ofthe spindle operating,` upon three balls; Fig. 2, a top view of thesame.

The nature of my invent-ion consists in the arrangement and combinationof a roundpointed spindle revolving` upon three balls that revolve in atlanged disk as a movable step for the spindle.

A represents the square frame that supports the spindle B. G is acircular platform, to which the circular' disk D is permanentlyattached. This disk D has a circular iiange,

What I claim as my invention, and desire to secure by Letters Patent,is-

The arrangement and combination of a round-pointed spindle revolving,`upon and with three balls as a revolving step, as herein described, andfor the purposes set forth.

ABRAHAM G. HAMAKER.

fitnessesz J. FRANKLIN REIGART, JOHN S. HOLLINGSHEAD.

